Merge Node

Hello, I have a problem with merge node.
I have input 1 like:

[
  {
    "data": {
         "details": {
             "details1": "abc",
             "details2": "def",
          }
     }
  }
]

And input 2 like:

[
  {
    "data": {
         "details": {
             "details3": "ghi",
             "details4": "jkl",
          }
     }
  }
]

I would like to have output like:

   [
      {
        "data": {
             "details": {
                  "details1": "abc",
                 "details2": "def",
                 "details3": "ghi",
                 "details4": "jkl",
              }
         }
      }
    ]